Lighting device



FIG. 1 is a top view of a lighting device in accordance with my new design;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a bottom perspective view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a back view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a bottom view thereof. 

The ornamental design for a lighting device, as shown and described. 